Hail of Blades oversights (Jhin/Sylas)
Jhin doesn't benefit from hail of blades on his first auto attack with it:
When you pick hail on Jhin, it doesn't apply to his first attack in any way, only his second and third. It's not pushed back to apply to the next auto after that like he used to after 8.22, he only gets the benefit from it on two attacks. It's also not tied to which auto he's on in his reload cycle. My best guess for why is that part of the 8.20/8.22 bugfixes was not reverted when hail was later changed to apply to the triggering attack and the next two, rather than the three after the triggering attack.
Sylas' auto resets don't prolong the effect of hail of blades:
Recently, hail was changed to have more synergy with auto resets by not consuming a hail auto when you'd be attacking again quick anyways. Thanks a bunch for that, by the way! When Sylas came out his W and E1 auto resets got overlooked, that's all.